Danfoss Thermostat, types RT 14E, RT 101E, RT 107E, RT 123E Installation guide

Danfoss
Brand
Danfoss
Model
Thermostat, types RT 14E, RT 101E, RT 107E, RT 123E
Type
Installation guide

Danfoss Thermostat, types RT 14E, RT 101E, RT 107E, RT 123E

The Danfoss Thermostat is a versatile and reliable temperature control device suitable for various industrial and commercial applications involving temperature regulation. Key features and use cases include:

  • Temperature Regulation: Accurately monitors and maintains desired temperatures within a specified range, ensuring optimal performance and efficiency.
  • Adjustable Settings: Allows for precise adjustment of both minimum and maximum actuating temperatures, providing flexibility to meet specific requirements.
  • Differential Setting: Enables customization of the temperature difference between switch-on and switch-off points, optimizing control precision.

Danfoss Thermostat, types RT 14E, RT 101E, RT 107E, RT 123E

The Danfoss Thermostat is a versatile and reliable temperature control device suitable for various industrial and commercial applications involving temperature regulation. Key features and use cases include:

  • Temperature Regulation: Accurately monitors and maintains desired temperatures within a specified range, ensuring optimal performance and efficiency.
  • Adjustable Settings: Allows for precise adjustment of both minimum and maximum actuating temperatures, providing flexibility to meet specific requirements.
  • Differential Setting: Enables customization of the temperature difference between switch-on and switch-off points, optimizing control precision.
Installation guide
Thermostat
RT 14E, RT 101E, RT 107E, RT 123E
017R9518
017R9518
© Danfoss | DCS (jmn) | 2015.11
DKRCC.PI.CB0.A7.02 | 520H10533 | 1
Danfos
s
17-5027.10
[°C] [°C]
-5
A
C
B
[°C][°C]
A
C
B
[°C] [°C]
A
C
B
[°C]
A
C
B
[°C]
RT 14E RT 101E RT 123ERT 107E
A: Range setting
B: Diffential obtained
C: Differential setting
List of applicable standards:
for ATEX: EN 60079-0:2012+A11:2013; EN 60079-11:2012
for IECEx: IEC 60079-0:2011; IEC 60070-11:2011
Specific conditions of use:
The enclosure fascia has been coated with a layer of
stainless steel to prevent the accumulation of electrostatic
charge. In order to ensure that there is no accumulation
of electrostatic charge on the enclosure, the end user
shall ensure that the external metal work of the enclosure
is locally bonded to earth. Information on the durability
of the coating with regards to use of the equipment is
contained within the instruction manual.
Fig. 1
Fig. 3
Fig. 4 Fig. 5
Fig. 2
© Danfoss | DCS (jmn) | 2015.11
DKRCC.PI.CB0.A7.02 | 520H10533 | 2
Installation
A set of Pg13.5 cable gland is attached to the RT in a separate bag. To
ensure IP66 (units with automatic reset) or IP54 (units with external
reset) grade of RT enclosure it is necessary to assemble this gland
as shown in the fig. 2. If this gland is not used with a cable, a metal
blinding should be also assembled.
RT units can be fitted in any position. Use the mounting holes (25). With
outdoor installation, the unit should be protected against rainfall. The
bulb should be fixed to the wall by means of a bulb holding bracket
(26). If it is desired to install the bulb in a water or brine tank, this can be
done by using either a capillary stuffing box (31) or a bulb pocket (30).
If bulb pocket is to be used, for correct bulb fitting see fig. 4.
Electrical connection
See fig. 5.
START = make. STOP = break. DIFF. = differential.
Cable diameter: 6 – 14 mm
The earth terminal (38) should be connected to earth.
Wire dimension: min. 0,75mm²
Adjustment
Set the thermostat for minimum actuating temperature (range setting).
Setting is done by rotating the knob (5), at the same time reading the
main scale (9).
The differential is set by rotating the differential adjusting nut (19)
according to the nomogram concerned (fig. 3).
Maximum actuating temperature is the sum of the temperature setting
and the differential.
Example:
An RT 123E is required to regulate the temperature in a drying oven.
Max. temperature 188 °C, min. temperature 180 °C, differential
188 °C - 180 °C =8 °C.
1. Set the thermostat on 180 °C with the knob (5).
2. Set the differential adjusting nut (19) on number 3 which can be
found by reading off the nomogram for the RT 123E in fig. 3.
In general, turning the knob automatically moves both the maximum
and minimum actuating temperatures (break and make) up or down
because of the fixed differential. On the other hand, turning the dif-
ferential adjusting nut only, alters the maximum actuating temperature.
Safety requirements
1. The refrigeration system must always comply with European Ex
installation standard, EN 60079-14, any local directive and legislation
as well as any other regulation applying in the area of installation.
2. RT-E temperature control must be used only with reliable means of
limiting the voltage and current to prevent sparks between the
contact surfaces. The equipment to be used for electrical load limit-
ing must be certified for gas group IIC. Also RT-E thermostat must
be installed as a part of IIC electrical installation.
3. Cable and cable entries approved for the application must be used.
Cables must not be in contact with sharp edges. The cable must be
connected with adequate stress relief in order to prevent that pull-
ing forces can be carried through the cable to the terminal.
4. The cycle frequency of the RT-E switch must be kept as low as possi-
ble
to prevent fatique failure on the bellows. The vibration level
must be kept as low as possible.
5. It is recommended to regularly check the function of the RT-E
switch.
6. Only apparatus designed, constructed and released by Danfoss
must be used for application concerned. Danfoss can accept no
responsibility in case of alterations made on the thermostats or the
use of them against the instructions of Danfoss.
7. Any overload of the RT switch must be prevented. Overloaded or
damaged apparatus must be exchanged.
8. Only authorised persons, who are certified in installing and main-
taining refrigration system may do the installation, maintenance
and exchange of the switch. Use only appropriate tools
9. Dispose of the switch in an environmentally-friendly way.
10. RTE switches must be installed in area where is low risk of
mechanical damage.
11. Components within the equipment can exceed the enclosure tem-
perature by 1K (1°C). When the media temperature exceeds 80°C, it
is the responsibility of the user to ensure that the media tempera-
ture does not cause a thermal ignition risk on parts between the
media and the switch enclosure. Maximum media temperature on
temperature switch with 2m capillary tube is 300°C.
12. Isolation of the intrinsically safe circuit to ground and to the contact
mounting screw has been verified through 500VACrms dielectric
strength testing, carried out in accordance with IEC 60079-11:2011
section 10.3.
13. Surface of the front cover is sputtered with stainless steel - avoid
abrasion.
14. Power must be switched off before maintenance and opening the
RT-E.
Product marking Technical data
Type
Range
[°C]
Max. permissible bulb temperature
[°C]
RT 14E -5 – 30 150
RT 101E 25 – 90 300
RT 107E 70 – 150 215
RT 123E 150 – 250 300
Permissible ambient temperature -20 – 65 °C
Intrinsically safe specification
U
i
= 29 V
l
i
= 0.5 A
P
i
= 1 W
C
i
= 0.5 nF
L
i
= 0.2 μH
Contact load
max. 100 mA, 30 V AC / DC
min. 1 mA, 5 V AC / DC
Must be used with a certified Ex ia barrier satisfying the
input parameters.
Temperature
class
Process temperature
limit [°C]
T1
T2
T3
T4
T5
T6
300
289
194
129
94
79
0539 II2G
Ex ia IIC T6...T1 Gb -20 °C ≤ Ta ≤ 65 °C
DEMKO 14 ATEX 1406X
IECEx ULD 14.0013X
U
i
= 29 V I
i
= 0.5 A P
i
= 1 W
C
i
= 0.5 nF L
i
= 0.2 μH
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Danfoss Thermostat, types RT 14E, RT 101E, RT 107E, RT 123E Installation guide

Danfoss
Brand
Danfoss
Model
Thermostat, types RT 14E, RT 101E, RT 107E, RT 123E
Type
Installation guide

Danfoss Thermostat, types RT 14E, RT 101E, RT 107E, RT 123E

The Danfoss Thermostat is a versatile and reliable temperature control device suitable for various industrial and commercial applications involving temperature regulation. Key features and use cases include:

  • Temperature Regulation: Accurately monitors and maintains desired temperatures within a specified range, ensuring optimal performance and efficiency.
  • Adjustable Settings: Allows for precise adjustment of both minimum and maximum actuating temperatures, providing flexibility to meet specific requirements.
  • Differential Setting: Enables customization of the temperature difference between switch-on and switch-off points, optimizing control precision.
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